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In a standardization titration involving hydrochloric acid and sodium carbonate, a student recoirded the following results for the volume of hydrochloric acid used against 10.00mL of the sodium carbonate solution : 15.60; 14.50; 14.70 aqnd 14.20. What is the average titre value of the acid?
what is the percent by mass of nahco3 in a solution containing 30 g of nahco3 dissolved in 500 ml of
A compound is 54.53% C, 9.15% H, and 36.32% O by mass. What is its empirical formula
Cadaverine are 9.13 and 10.25. If the ends of these molecules look the same, why do they have different pkas?
What is the pH at the stoichiometric point (end point) for the titration of 50 ml of 0.20 M methyl amine CH3NH2 (aq) with 0.20 M perchloric acid HClO4(aq). For methyl amine (CH3NH2), Kb = 3.6 x 10^-4.
Fortunately, you can narrow the search because the PVC piping comes from unique vendors each with their unique degrees of polymerization. By detailed measurement, you determine that the PVC molecular non-extended (i.e., coiled) length is 7 nm. Wha..
State a baseball must weigh between 5.00 and 5.25 ounces (1 ounce =28.3g). Explain what is the wavelength of a 5.15 ounce baseball thrown at92mph
A detailed mechanism for the formation of ethyl acetate from ethanol as well as acetic acid with H2SO4 as catalyst
Rank each of the following measurements from smallest to largest
rewrite the equation so heat of reaction (delta H) equals deltaHf for 4PCl3 (g) yields p4(s) + 6Cl2 (g) Values for delta HF in Kj/mol are:
A 368-g sample of water absorbs infrared radiation at 1.06x10(4 ) nm from a carbon dioxide laser. Assume all the absorbed radiation is converted to heat. Compute the number of photons at this wavelength required to increase the temperature of wate..
For the reaction of nitrogen monoxide, NO with chlorine, Cl2, 2NO(g) + Cl 2(g) -> 2NOCl(g) ; the observed rate law is : Rate = K[NO]^2 [Cl] What's the reaction order with respect to nitrogen monoxide? With respect to Cl2? What's the overall order?
Explain what is the solubility of oxygen in water in contact with air when atmospheric pressure is 1 atm, the temperature is 20oC and the electric conductivity is 19,000 s/cm
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